docs: def errint(marker, number):
      """
      Substitute an integer for the first occurrence of a marker found
      in the current long error message.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/errint_c.html
  
      :param marker: A substring of the error message to be replaced.
      :type marker: str
      :param number: The integer to substitute for marker.
      :type number: int
      """
      marker = stypes.stringToCharP(marker)
      number = ctypes.c_int(number)
      libspice.errint_c(marker, number)